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Step2247 [10]
2 years ago
11

It takes at 45 minutes to complete his science homework. It takes him 2/3 as long to complete his math homework. How long does i

t take add to complete his math homework?
Mathematics
2 answers:
lidiya [134]2 years ago
6 0
The person above me is right
Llana [10]2 years ago
5 0

Answer:

30 minutes

Step-by-step explanation:

45 =     15 +15 +15     (3 parts of 15)

2 parts of 15  = 30

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You sell the shoes pictured during your 6-hour shift. The prices are:
Aleks [24]

Answer:

6 \times 12.5 = 75

The total price in shoe sales equals $709.96

10% of $709.96 is $71 after rounding up.

$71 plus $75=$146

answer-$146

5 0
2 years ago
13. Wind farms are a source of renewable energy found around the world. The power P (in kilowatts) generated by a wind turbine v
suter [353]
Since the Power is directly proportional to the velocity, their ratio \frac{P}{v^{3} } is constant.

<span>Therefore </span>\frac{500}{ 10^{3} } = \frac{x}{ 12^{3} } which is a proportion:

500 : 1000 = x : 1728

that can be easily solved:

x = (500×1728)/1000 = 864kW

8 0
3 years ago
Read 2 more answers
A box contain 12 balls in which 4 are white 3 are blue and 5 are red.3 balls are drawn at random from the box.find the chance th
Anastasy [175]

Answer:

3/11

Step-by-step explanation:

From the above question, we have the following information

Total number of balls = 12

Number of white balls = 4

Number of blue balls = 3

Number of red balls = 5

We solve this question using combination formula

C(n, r) = nCr = n!/r!(n - r)!

We are told that 3 balls are drawn out at random.

The chance/probability of drawing out 3 balls = 12C3 = 12!/3! × (12 - 3)! = 12!/3! × 9!

= 12 × 11 × 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1/(3 × 2 × 1) × (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1)

= 220 ways

The chance of selecting 3 balls at random = 220

To find the chance that all the three balls are selected,

= [Chance of selecting (white ball) × Chance of selecting(blue ball) × Chance of selecting(red balls)]/ The chance/probability of drawing out 3 balls

Chance of selecting (white ball)= 4C1

Chance of selecting(blue ball) = 3C1 Chance of selecting(red balls) = 5C1

Hence,

= [4C1 × 3C1 × 5C1]/ 220

= 60/220

= 6/22

= 3/11

The chance that all three are selected is = 3/11

4 0
3 years ago
2. Penny is 1/16 inch thick and there are now 500,000,000,000 pennies. How many miles high would the stack be? *Use the converte
Ilia_Sergeevich [38]

Answer:

447451 miles

Step-by-step explanation:

a mile is 5820 feet or 69840 inches. 500,000,000,000/16 and then divide that by 5820

3 0
2 years ago
PZ PLZ PLZ HELP I DO NOT UNDERSTAND THIS KINDA OF STUFF IF U DONT KNOW DO NOT ANSWER IT I ACTUALLY NEED HELP NO LINKS PLZ PLZ
ivanzaharov [21]

Answer:

176

Step-by-step explanation:

11x11=121

12x11=132

9=20-11

16-9=7

11x16=176

Hope this helped you :D

And pls give me brainlist if you can

7 0
2 years ago
Read 2 more answers
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